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/* $OpenBSD: lib_vidattr.c,v 1.3 1997/12/03 05:21:39 millert Exp $ */
/***************************************************************************
* COPYRIGHT NOTICE *
****************************************************************************
* ncurses is copyright (C) 1992-1995 *
* Zeyd M. Ben-Halim *
* zmbenhal@netcom.com *
* Eric S. Raymond *
* esr@snark.thyrsus.com *
* *
* Permission is hereby granted to reproduce and distribute ncurses *
* by any means and for any fee, whether alone or as part of a *
* larger distribution, in source or in binary form, PROVIDED *
* this notice is included with any such distribution, and is not *
* removed from any of its header files. Mention of ncurses in any *
* applications linked with it is highly appreciated. *
* *
* ncurses comes AS IS with no warranty, implied or expressed. *
* *
***************************************************************************/
/*
* vidputs(newmode, outc)
*
* newmode is taken to be the logical 'or' of the symbols in curses.h
* representing graphic renditions. The terminal is set to be in all of
* the given modes, if possible.
*
* if the new attribute is normal
* if exit-alt-char-set exists
* emit it
* emit exit-attribute-mode
* else if set-attributes exists
* use it to set exactly what you want
* else
* if exit-attribute-mode exists
* turn off everything
* else
* turn off those which can be turned off and aren't in
* newmode.
* turn on each mode which should be on and isn't, one by one
*
* NOTE that this algorithm won't achieve the desired mix of attributes
* in some cases, but those are probably just those cases in which it is
* actually impossible, anyway, so...
*
* NOTE that we cannot assume that there's no interaction between color
* and other attribute resets. So each time we reset color (or other
* attributes) we'll have to be prepared to restore the other.
*/
#include <curses.priv.h>
#include <term.h>
MODULE_ID("Id: lib_vidattr.c,v 1.17 1997/09/28 00:23:21 tom Exp $")
#define doPut(mode) TPUTS_TRACE(#mode); tputs(mode, 1, outc)
#define TurnOn(mask,mode) \
if ((turn_on & mask) && mode) { doPut(mode); }
#define TurnOff(mask,mode) \
if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; }
int vidputs(attr_t newmode, int (*outc)(int))
{
static attr_t previous_attr = A_NORMAL;
attr_t turn_on, turn_off;
int pair, current_pair;
T((T_CALLED("vidputs(%s)"), _traceattr(newmode)));
/* this allows us to go on whether or not newterm() has been called */
if (SP)
previous_attr = SP->_current_attr;
T(("previous attribute was %s", _traceattr(previous_attr)));
#if !USE_XMC_SUPPORT
if (magic_cookie_glitch > 0)
newmode &= ~(SP->_xmc_suppress);
#endif
if (newmode == previous_attr)
returnCode(OK);
turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR;
turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR;
pair = PAIR_NUMBER(newmode);
current_pair = PAIR_NUMBER(previous_attr);
/* if there is no current screen, assume we *can* do color */
if ((!SP || SP->_coloron) && pair == 0) {
T(("old pair = %d -- new pair = %d", current_pair, pair));
if (pair != current_pair) {
_nc_do_color(pair, outc);
previous_attr &= ~A_COLOR;
}
}
if (newmode == A_NORMAL) {
if((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) {
doPut(exit_alt_charset_mode);
previous_attr &= ~A_ALTCHARSET;
}
if (previous_attr) {
doPut(exit_attribute_mode);
previous_attr &= ~A_COLOR;
}
} else if (set_attributes) {
if (turn_on || turn_off) {
TPUTS_TRACE("set_attributes");
tputs(tparm(set_attributes,
(newmode & A_STANDOUT) != 0,
(newmode & A_UNDERLINE) != 0,
(newmode & A_REVERSE) != 0,
(newmode & A_BLINK) != 0,
(newmode & A_DIM) != 0,
(newmode & A_BOLD) != 0,
(newmode & A_INVIS) != 0,
(newmode & A_PROTECT) != 0,
(newmode & A_ALTCHARSET) != 0), 1, outc);
previous_attr &= ~A_COLOR;
}
} else {
T(("turning %s off", _traceattr(turn_off)));
TurnOff(A_ALTCHARSET, exit_alt_charset_mode);
TurnOff(A_UNDERLINE, exit_underline_mode);
TurnOff(A_STANDOUT, exit_standout_mode);
if (turn_off && exit_attribute_mode) {
doPut(exit_attribute_mode);
turn_on |= (newmode & (chtype)(~A_COLOR));
previous_attr &= ~A_COLOR;
}
T(("turning %s on", _traceattr(turn_on)));
TurnOn (A_ALTCHARSET, enter_alt_charset_mode);
TurnOn (A_BLINK, enter_blink_mode);
TurnOn (A_BOLD, enter_bold_mode);
TurnOn (A_DIM, enter_dim_mode);
TurnOn (A_REVERSE, enter_reverse_mode);
TurnOn (A_STANDOUT, enter_standout_mode);
TurnOn (A_PROTECT, enter_protected_mode);
TurnOn (A_INVIS, enter_secure_mode);
TurnOn (A_UNDERLINE, enter_underline_mode);
TurnOn (A_HORIZONTAL, enter_horizontal_hl_mode);
TurnOn (A_LEFT, enter_left_hl_mode);
TurnOn (A_LOW, enter_low_hl_mode);
TurnOn (A_RIGHT, enter_right_hl_mode);
TurnOn (A_TOP, enter_top_hl_mode);
TurnOn (A_VERTICAL, enter_vertical_hl_mode);
}
/* if there is no current screen, assume we *can* do color */
if ((!SP || SP->_coloron) && pair != 0) {
current_pair = PAIR_NUMBER(previous_attr);
T(("old pair = %d -- new pair = %d", current_pair, pair));
if (pair != current_pair) {
_nc_do_color(pair, outc);
}
}
if (SP)
SP->_current_attr = newmode;
else
previous_attr = newmode;
returnCode(OK);
}
#ifdef EXTERN_TERMINFO
#undef vidattr
#endif
int vidattr(attr_t newmode)
{
T((T_CALLED("vidattr(%s)"), _traceattr(newmode)));
returnCode(vidputs(newmode, _nc_outch));
}
chtype termattrs(void)
{
chtype attrs = A_NORMAL;
if (enter_alt_charset_mode)
attrs |= A_ALTCHARSET;
if (enter_blink_mode)
attrs |= A_BLINK;
if (enter_bold_mode)
attrs |= A_BOLD;
if (enter_dim_mode)
attrs |= A_DIM;
if (enter_reverse_mode)
attrs |= A_REVERSE;
if (enter_standout_mode)
attrs |= A_STANDOUT;
if (enter_protected_mode)
attrs |= A_PROTECT;
if (enter_secure_mode)
attrs |= A_INVIS;
if (enter_underline_mode)
attrs |= A_UNDERLINE;
if (SP->_coloron)
attrs |= A_COLOR;
return(attrs);
}
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